本文提出了一种利用定点检测器数据（流量和时间平均速度）来获取交通流密度的方法。
This paper has proposed a method to estimate traffic density using the output(traffic flow and time mean speed) of fixed traffic detectors.
因此， 该装置可以和被置于检测器的较短距离处的较大源一起使用，从而导 致较高的通量密度和因此较短的曝露时间。
The setup can therefore be used with larger sources placed at shorter distance of the detector resulting in higher flux densities and thus shorter exposure times.
采用流动相梯度淋洗，紫外检测器波长编程的方法测定富集后的酚类化合物，并测定了方法的精密度、准确度和检测限。
The extracted phenols were detected by gradient eluted mobile phase and UV wavelength programming HPLC. The precision, accuracy and detection limits of established methods were determined.
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